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PRODUCT INFORMATION
MAP 44/460xA
Aug/2004
SURROUND
P R O L O G I C II
MAP 44/460xA Micronas Audio Processor
Applications
Home Theater Systems Surround Sound AV Amplifiers Home Theater in a Box (HTiB) Mini/Midi Component Stereo Hi-Fi components 2.0/2.1-channel Audio systems Multimedia Audio Automotive Sound Systems
SOUNDFIELD
The Micronas Audio Processor family MAP 44/460xA includes all functions and building blocks required in consumer audio applications. Reducing system costs, the ICs are equipped with analog inputs and outputs, as well as digital interfaces. The integrated DSP performs the basic processing of 2.0 up to 5.1 Dolby Pro Logic II multichannel audio. With the extension of a Micronas MAS 35xyH coprocessor, a complete DTS and Dolby Digital 5.1-channel home audio decoder/amplifier can be realized. Further available extensions are the USB audio codec UAC 355yB and the "lip sync" audio delay line MAD 4868A. Being processed in the DSP section of MAP 44/460xA, a variety of Micronas audio technologies and well known 3rd party audio technologies are available. Built-in highquality D/A converters feed analog power amplifiers. Alternatively, digital outputs allow to connect state-of-the-art "class-D" digital amplifiers. Micronas' "Hi-Resolution PWM" technology enables detail-rich and natural sound.
Programmable subwoofer filter ROM mask-programmed DSP; no software downloads necessary
Interfaces and I/O
5 stereo line inputs and 3 stereo line outputs (2 VRMS) Full switching matrix (any input to any output) S/PDIF output (PCM stereo) Multichannel I2S inputs with adaptive sampling rate converter 2 A/D converters with 95 dBA dynamic range (typ.) 6 D/A converters with analog volume (MAP 440xA), with 95 dBA dynamic range (typ.) 6 "Hi-Resolution PWM" outputs for loudspeakers (MAP 460xA) 2 D/A converters with analog volume for headphone/aux out 4 line D/A converters (2 VRMS)
Audio Processing
Dolby Pro Logic II and Virtual Dolby Surround Pro Logic II SRS TruSurround XT and SRS WOW BBE Multi-Channel HD Sound Micronas BASS bass enhancement Micronas SOUNDFIELD processing: Cathedral, Jazz Club, Karaoke, ... Bass/Treble or 7-band Graphic Equalizer 3-band Parametric Equalizer Micronas NIGHT dynamic limiter and speech enhancement processing
License Notice: BBE, Dolby, DTS, and SRS are (registered) trademarks.
PRODUCT INFORMATION
MAP 44/460xA
Miscellaneous
DVD Player
Aug/2004
Pin- and software-compatible IC family. The family member chips differ in: - analog vs. digital loudspeaker output - 2.1- vs. 5.1-ch. loudspeaker support - Features and I/Os available in groups Very few external components only All functions programmable via I2C bus Packages: PMQFP80-11 (0.8 mm pitch) and PMQFP100-1 (0.5 mm pitch).
DVD
S/PDIF IN
MAS 35xyH
Surround Left
Pushbutton Matrix
Surround Right
Set-Top Box
C
I2S
Left
Display IR Remote Control
Right
I2C
Line In
PWM Amp
Center Subwoofer
MAP 460xA
Codec / DSP Post Processor PWM "Class-D" Modulator
PWM Amp PWM Amp
S/PDIF
I2S I2S
Line Out
MAD 4868A* Delay Line
Headphones
UAC 355xB* USB-Codec
6261-229-1x
* optional
Fig. 1: Typical application System Architecture
The hardware of the MAP 44/460xA consists of digital audio processing units in the DSP, as well as analog I/O including highperformance A/D and multibit sigma-delta D/A converters with oversampling digital interpolation filters. Additionally, an on-chip PWM modulator driven by Micronas "HiResolution PWM" technology is available. The DSP is designed as a dedicated audio signal processor. Its RISC architecture makes it small and cost-efficient, while providing sufficient power to process multiple audio algorithms. The DSP software is completely written in Assembler, avoiding C-compiler overhead, while optimum usage of the DSP resources is ensured. The Assembler code is optimized to provide best audio performance. All program code is located in the internal ROM; no download has to be performed during power-up and no ROM for audio algorithms is needed on the system controller. Fully specified for audio applications, the mixed-signal chips' analog components interface ideally to the DSP part, minimizing the number of external components.
I2S in
I 2S
Sampling Rate Converter
Speaker Processing
6-ch. Hi-Res PWM or D/A
Speaker out 5.1
Source Selector
Headphone Processing
2-ch. D/A Volume
Headphone out
I2 S S/PDIF 2-ch. A/D 2-ch. D/A 2-ch. D/A Mux
I2S out S/PDIF out
5 x Stereo Line in
Mux
3 x Line out
Hardware
Software
Fig. 2: Block diagram of the MAP 44/460xA
All information and data contained in this product information are without any commitment, are not to be considered as an offer for conclusion of a contract, nor shall they be construed as to create any liability. Product or development sample availability and delivery are exclusively subject to our respective order confirmation form. By this publication, Micronas GmbH does not assume responsibility for patent infringements or other rights of third parties which may result from its use.
No part of this publication may be reproduced, photocopied, stored on a retrieval system, or transmitted without the express written consent of Micronas GmbH. Edition Aug. 3, 2004; Order No. 6251-653-1PI
Micronas GmbH Hans-Bunte-Strasse 19 D-79108 Freiburg (Germany) P.O. Box 840 D-79008 Freiburg (Germany) Tel. +49-761-517-0 Fax +49-761-517-2174 E-mail: docservice@micronas.com www.micronas.com

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